PDF malware analysis — malicious · 0cdc0e9c734516b4

MALICIOUS

PDF

82.5 KB Created: 2021-09-01 05:43:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12

MD5: a96da4b07719b158380212d3a6b31786 SHA-1: 229e9e1f78f2d59c271e5437b8c08808736a6791 SHA-256: 0cdc0e9c734516b4c818e13371f130b0a944daa30308385a0cb7010973f91d1e

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious. It contains numerous links pointing to compromised websites, suggesting a phishing or malware distribution scheme. The ClamAV detection of 'Pdf.Phishing.Trojan' further supports its malicious nature.

Machine Learning

Nyx PDF Classifier malicious score 0.9917

Heuristics 6

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM

PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM

Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
External URI info PDF_URI

PDF contains an external URL action
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL https://chennothinterios.com/uploads/file/45727705246.pdf In PDF document text
- http://www.absolutecateringla.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d4e6917fc87---matujegopube.pdfIn PDF document text
- https://www.saenger-ohg.de/wp-content/plugins/formcraft/file-upload/server/content/files/161100c6c18f8f---35679589383.pdfIn PDF document text
- http://zawayakw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa8aa541754---pazigafasugubama.pdfIn PDF document text
- http://www.ebsjosepirosamaria.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607045b9e6586---tofasebekabosolad.pdfIn PDF document text
- http://sacoorhealth.pt/site/upload/file/49195862475.pdfIn PDF document text
- https://truck-diagnostic.ru/wp-content/plugins/super-forms/uploads/php/files/579d26b37819bbf843282743f17a5b6b/bijutorogawapafad.pdfIn PDF document text
- https://biocoop.legreniervert.fr/ckfinder/userfiles/files/suzinasuj.pdfIn PDF document text
- https://agatanorek.com/files/file/94616895535.pdfIn PDF document text
- https://www.d-table.com/wp-content/plugins/super-forms/uploads/php/files/75ec53b723e17c274d443247c133f478/9053729372.pdfIn PDF document text
- http://jakpaisanestate.com/images/upload/files/55875215759.pdfIn PDF document text
- http://limeitec.com/upfiles/editor/files/20587460840.pdfIn PDF document text
- https://alshaabcoop.com/userfiles/file/xozexuvatatidof.pdfIn PDF document text
- https://stmarys-perthamboy.com/upload/File/11665136742.pdfIn PDF document text
- https://123kozijnofferte.nl/wp-content/plugins/super-forms/uploads/php/files/553h66gn6vt0j2u65gs00gsbo1/69829101761.pdfIn PDF document text
- https://pass-eco-energies.com/ckfinder/userfiles/files/dakajawuvimonalazezeg.pdfIn PDF document text
- https://dsodrecital.com/wp-content/plugins/formcraft/file-upload/server/content/files/161240e991871c---73177648915.pdfIn PDF document text
- https://www.pferde-fuer-unsere-kinder.de/wp-content/plugins/formcraft/file-upload/server/content/files/160d0591a36ce0---ravoxavarurafafanarerijit.pdfIn PDF document text
- http://kayapaliinsaat.net/file/xazoxuvokitib.pdfIn PDF document text
- https://www.bouwenaaneensterkwerkgeversmerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607effe4adb1c---33564634807.pdfIn PDF document text
- http://allegroescrow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a7c480e4965---xadijulet.pdfIn PDF document text
- http://www.kliningstroy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1609a37257cc90---39475254495.pdfIn PDF document text
- https://nacionalequipamentos.com/ckeditor/uploads/files/57084617072.pdfIn PDF document text
- https://rkdestate.com/userfiles/file/89435602058.pdfIn PDF document text
- http://goksirkrupskimlyn.pl/img/upload/files/137119372.pdfIn PDF document text
- https://newtech-utm.pl/userfiles/file/fesivoduxewozax.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=instagram+data+deleted+messagesPDF link annotation
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000dd50.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDD50	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000f562.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF562	18212 bytes
SHA-256: `efda3757f5648364ff51d2f9e021e9485a6ad27e1895250b67f4f97005bb57c2`
`font_02_sfnt_off000124c0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x124C0	10328 bytes
SHA-256: `230a578f0dbd87a907d627d898b47afa282009e408ae2bb60842cb6091b5a9b1`

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